\setlength{\tabcolsep}{1em} % for the horizontal padding
\def\arraystretch{1.3}

\renewcommand\thetable{A2} 
\begin{tabular}{lc}
\toprule
                                 &     Protest     \\
\hline                                 
Constant                      & 2.137\sym{***} \\
                                 & 0.317    \\
Coef. of Variation Max (1 week) & 0.005   \\
                                 & 0.022  \\
Coef. of Variation Max (2 weeks) & -0.098\sym{***}  \\
                                 & 0.025  \\
\midrule
\textit{N} & 263 \\
\bottomrule
\end{tabular}